namaycush vs sea trout

namaycush

noun
  • The togue: a large North American lake trout, Salvelinus namaycush, usually spotted with red. 

sea trout

noun
  • A fish of the species Salmo trutta morpha trutta, closely related to salmon and a subspecies of brown trout. It is lighter in colour than the brown trout, and lives in salt water, returning to fresh water only to spawn. 

  • The weakfish, Cynoscion regalis 

How often have the words namaycush and sea trout occurred in a corpus of books? (source: Google Ngram Viewer )